Automatic relief-valve.



No. 821,798. l PATENTEDMAY 29, 1906. A. HARRISON.

AUTOMATIC RELIEF VALVE.

APPLIGATIUN FILED s521221, 1904.

v port STATES PATENT @hihihihi AMOS HARRHSON, OF CHICAGO, lLLlNOlS,ASSGNOR, BY DIRECT AND MESNE ASSGNMENTS, TO WARREN WEBSTER A CGRPORA'HONNEW JERSEY.

CAMDEN, NEWV JERSY,

Ann ooMrANr, 'or

aurora/arie entretenerse.

Specification of Letters Patent,

Fatented May 29, 1906.

Application iled September 21,1904. Serial No, 225,31li.

My invention relates to that class of de` vices employed uponsteam-heating systems and the like to discharge the water ofcondensation Jfrom the radiators or equivalent parts without permittinga wasteful escape of the steam.

The object ot my invention is to produce a simple and durable device ofthe kind described that is not liable to become clogged up* or otherwiserenderedinoperative when in use;y and to this end it consists in thenovel construction, arrangement, and combination oi parts herein shownand described, and more particularly pointed out in the claims. Y

in the accompanying drawings, wherein like or similar referencecharacters indicate like or corrcspondin parts, Figure 1 is alongitudinal section oi my device, taken substantially on line l l oi'Fig. L.. Fig. 2 is a section taken substantially on line 2 2 of Fig. 1.Fig. 3 a section similar' to that shown in Fig. l, but showing amodified form of my device. 4 is an elevaicn of a radiator andconnecting pipes, showing the usual and preferred location of my devicein relation thereto when in service in the preferred form shown in thedrawings, l is the outer shell or case of m y device having aninleteport or coui'zection 2 .for attaching the same to a radiator orsimilar device and an outletportor connection 3 for attachment to one ofthe returnfipes of the system. form a 'chamber 4, inclosinsr thodischarge The wall 3LL is prei fled with one or more suitably-formedopenings into the interior or" the main chamber ci the casing l, whichopenings are controlled by a valve mechanism common to, or adapted tosimub taneously control, them all. The chamber t may be `formed integralwif "i the shell l, as shown in Fig. 3, or, il' pr rred, it may beseparately formed and suitably attached to the casing 1, as shown inFig. 1.

L, ed construction shown one An internal wall f5 is arranged toA side ofthe wall 3a is dentilatedor corrugated, forming two or moresubstantially horizontal walls arranged one above the other, with thevalve-o enings substantially registering with each ot er for conveniencein assembling the parts and simplicity of construction. Preferably anopening or vent 6 is provided near the upper end of the chamber 4 toallow any air confined within the casing 1 to be drawn -into the chamber4, and so discharged into the return-pipe. In some cases a valve 7 maybe provided and arranged to close the opening 6 when the main valve isopen. The main valve 5, which is preferably of tubular section,is'arranged to closely it and slide within the valve-openings formed inthe parts 8 and 9 of the wall 3u. If desired, the wall 10 may be soarranged that when the valve 5 is at the limit of its travel in thatdirection its end villl contact with the wall 1() and arrest itsmovement. In some cases i prefer to provide a slightlycnlarged portion11 at the upper ond of the valve 5, which may assist in preventing thepassage of iluid past the wall 8 when the valve 5 is at its lower limitof travel. rihe conical part 11, seated upon the outer surface of theport 8, also acts as a stop to limit the 'further movement of the valve.ln order to permit iuid to pass the valve 5, l provide a plurality ofopenings or ports in its wall, so arranged that when the valve is openthe openings or ports will afford a means of communication between theinterior ofthe casing 1 and the chamber 4; but

when the valve is closed communication is prevented.

In the form shown in Fig. 1 ports12 and`14 are provided in the valve,the walls 8 and 9 being formed of sufficient thickness and the ports sopositioned that when the valve is" closed the wa ls 8 and 9 entirelycover both openings, and so close them. When the valve is raised, theports 12 and 14 are respectively elevated above the walls 8 and 9, andthe fluid within the outer chamber can enter the chamber fi by means ofthe said ports and the tubular interior of the valve 5. Obviously inthis case the ends of the valve 5 may be open or closed, as preimred,without affecting ythe operation.

in the form vshown in Fig. 3 two additional ports 15 and le and atransverse partition 17 are provided. this case when the valve meer' isopen the' fluid entering the valve by the V o ening or port 12 isdischarged into the c amber 4 by vway-of the opening 15, while 'thatentering vthe chamber 4 by the opening 14 enters the valve by way of theopening 16,

the partition 17 preventing communication between the two pairs ofopenings. In this form of valve it is necessary that the upper end ofthe valve 5 be closed, while the lower end may be open or closed, aspreferred. The movements of the valves are preferably controlled by asuitable float 17, positioned within the main chamber ofthe casing 1 andconnected to the valve by means of the rod or stem 18. Preferably theend of the rod 18 or equivalent means projects beyond the top of thefloat 17, to act as a guide and a stop to engage the cap 19 of thecasing 1 and limit the u ward movement of the float. As shown, t eprojecting end of the rod 18 is loosely engaged within a recess 20,which serves as a guide to prevent binding of the valve or amage to thefloat by contact with the sides of the casing. The float 17 may be ofany desired form or ty e; but in my lpreferred 'construction I-emp oy acombination closed and open type, two forms ofwhich are shown in Figs. 1and 3. In this type of float should the open portion from an causebecome filled With fluid the close l portion would still possesssufficient buoyancy to continue to operate the valve. 'i

f In the float shown in Fig. 1 a closed vessel or float 21 of anypreferred form is positioned within the invertedcup-shaped vessel orfloat 17 and both are secured to the rod 18 in any preferred manner,while in the form shown in Fig. 3 a partition 22' extends across theinverted-cup-shape'd-vessel 17, forming a closed vessel or float in itsupper end, while the lower portion remains as an open float.

It will be seen that by my improved construction a dirt pocket orchamber is provided below the level of the outlet-ports, preventing theclogging of the valves and interi ference with their operation.

In attaching my valve to a radiator it is.

preferred that vthe usual automatic air-relief valve 25 shall beattached to the radiator inl the usual manner. and be connected by suitable piping to the return-pipe' leading from my valve. shown in Fig. 3,the piping may, if preferred, connect with the chamber 4 at 26, asindicated.

The operation of my device is obvious from the foregoing description,anda further explanation is deemed unnecessary.

So far as my invention relates `to the combination of valves to controlboth a valveport and air-vent to the discharge-chamber it is not to berestricted to the tubular valve;

6 5 fform may be used.

When the valve is constructed as:

Having thus described my improvement, it is obvious that variousimmaterial modifications may be made Without 'departing from the spiritof my invention. Hence I do not wish to be understood as limiting myselfto the exact form or construction shown.

h What I claim as new, anddesire to secure by Letters Patent, is-

1. A device of the kind describedcomprising an inclosing shell providedwith an inlet-port and a discharge-port, an internal wall provided witha plurality of valve-ports and arranged to forma chamber inclosing thedischarge-port, and means for connecting the shell in a heatin system,in combination with an open tubu ar valve for controlling saidvalve-ports, and a float arranged within the shell connected with andcontrolling the movements of said valve. l

2. A device of the kind described, comprising an inclosing shellprovided with an inletort and a discharge-port, an internal ywall avingsubstantially parallel horizontal walls arranged one above the other,registering valveorts extending through a plurality of said orizontalwalls, said internal wall forming a chamber inclosing the dischargeort,and means for connecting the shell in a eatin system, in combinationwith a slidin tu ular valve for said valve-ports prolvi ed with a seatfor each horizontal wallopening and having-openin s formed therein whichare normally covere by said horizontal walls inclosin thel valve but areuncovered when the va ve is moved to permit the escape .of the fluidfrom the main chamber into the inclosing chamber, and a float "arrangedwithin the shell connected with and controlling the movements of saidvalve.

3. A device of the kind described, comprising an inclosing shellprovided with an inletort and a discharge-port, an internal wall orminga chamber inclosing the dischargeport and having substantiall horizontalWalls arranged one above the otl er, registering valveports extendinthrough a plurality of sai horizontal Wa ls, a vent through said wallconnecting with the main chamber, and means for connecting the shell ina heat- 1n system, in combination with a sliding tu-` buar- Avalve forsaid valve-ports rovided with a seat for each horizontal wal -openingand having openings or'ports formed therein which are normally coveredby said horizontal walls, but when the valve is moved uncover said ortsto permit the esca e of the fluid from t e main chamber into t einclosments of said valve, substantially as described.

TOO

IKO

4. A device ofthe kinddescribed, comprisl ing an inclosing shellYprovided with an inletport and a dischargp-port, yan internal wallarranged'to form a amber inclosing the discames charge-port and providedwith valve-ports and a vent, and means for connecting the' port and adischarge-port, an internal Wallarranged to form a chamber inclosing thedischarge-port and provided with a valve-port and a vent, and means forconnecting the shell in a heating system, in combination with a valvefor said valve-port, va valve for said vent, and a float arranged Withinthe shell connected with and controlling the movements of saidfirst-mentioned valve and adapted by its movement to control theoperation of the vent-valve.

6. In a device ofthe kind described, an inclosing shell provided with aninletort and a discharge-port, an internal Wall aving a plurality ofvalve-ports and a vent connecting with the main chamber in the shellformed therein, the said Wall forming a charnber inclosing thedischarge-port, and means for connecting the shell in a heating system,in combination With a single-valve provided with a valve-seat foreach'valve-port, a valve controlling said vent, a float arranged withinthe shell connected with andv controlling the movements of saidfirst-mentioned valve and by its movements also controlling saidventvalve.

7. A device of the kind described, comprising an inclosing shellprovided With an inletport and a'dischargeort, an internal Wall forminga chamber inc osing -adischarge-port and having substantially horizontalWalls arranged-one above the other, substantially registeringvalve-ports extending through a plurality of said horizontal walls avvent through said internal Wall connecting with the main chamber, andmeans for connecting the shell in a heatin system, in combination with asliding tubu ar valve for said valveports provided With a seat for eachhorizontal- Wall-opening and having openings or ports formed thereinWhichare normally covered by said horizontal Walls but when the valve ismoved uncover said ports'and permit the escape of fluid from the mainchamber into the inelosing chamber, a valve arranged to control saidvent, and a float arranged .Within the yshell and adapted lto controlthe movements of said valves.

8. A device ofthe kind described, comprislf ing an inclosing shellprovided With an inlet- .port and a discharge-port, an internal Wallarranged to form a chamber inclosing the discharge-port and providedWith a plurality of valve-ports, and 'means for connecting the shell ina heating system, in combination with an open tubular valve forcontrolling saidvalve-ports, a float provided With an airchamber andarranged Within the shell connected with and controlling the movements vof said valve.

9. In an automatic valve for the purpose described, the combinationV ofan inclosing shell having an inletort and a dischargeport, an internalwall orming a chamber inclosing the discharge-port, said chamber havinga valve-port and an air-vent to the inter'or of the shell, and valvescontrolled by the accumulation of Water of condensation 'in the shell tocontrol the valve-port and airvent to the discharge-chamber in saidinternal Wall. l

In testimony whereof I have hereunto signed my name in the presence oftWo subscribing witnesses.

n AMos HARRISON.

Witnesses BURTON U. HILLS, CHARLES I.-CoBB.

